`1.` By the time we arrived to the stadium, the football had started already.

`->` Thì QKHT

`->` Dấu hiệu: By the time + QKĐ, QKHT

`->` Cấu trúc: S + had  +VpII + ...

`2.` We plan to raise a fund for the street children and the homeless people.

`->` plan to raise: lên kế hoạch cho một việc gì đó

`3. `Telephone was invented by A. Graham Bell in 1786, wasn’t it?

`->` Câu bị động thì QKĐ

`->` Cấu trúc: S + was/were + VpII + (by + O) + ...

`4.` If I were you, I wouldn't spend much money on clothes.

`->` Câu điều kiện loại 2

`->` Cấu trúc: If + S + V-ed /V2+..., S + would / could / should + V-infi (wouldn't / couldn't + V-infi) + ..

`5.` What will you be doing this time tomorrow? – I will be attending a science class with my brother.

`->` Thì TLTD

`->` Dấu hiệu nhận biết: at this + time (tomorrow)

`->` Cấu trúc: (+) S + will + be + V-ing + ...

(?) Will + S + be + V-ing + ...

`6.` My sister prefers listening to music to reading books.

`->` prefer + V-ing + to V-ing : thích một cái gì đó hơn một cái khác.

`7.` If you don’t hurry up, you will miss the last bus to home.

`->` Câu điều kiện loại 1: If + S + V\(\left[ \begin{array}{l}(s/es)\\am/is/are\end{array} \right.\) + ... , S + will + V-infi + ...

`1`. arrived - had started

`->` By the time + quá khứ đơn, quá khứ hoàn thành

`2`. to raise 

`->` plan + to V: lên kế hoạch

`3`. was invented

`->` Câu bị động quá khứ đơn: S + was/were + Vpp

`4`. were - wouldn't spend 

`->` If 2: If + S1 + V2/ed, S2 + would + Vinf

`5`. will - be doing - will be attending

`->` at this time tomorrow: tương lai tiếp diễn

`6`. listening - reading

`->` prefer + Ving + to + Ving: thích cái gì hơn cái gì

`7`. will miss

`->` If 1: If + S1 + Vs/es, S2 + will + Vinf